Method and device for reading a document character
US4827531A · kind A · utility
170Cited by
19References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1987 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Apr 29, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/2253
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and device for reading and recognizing an unknown character on a document, the device measuring the character's waveform amplitude along timed intervals and determining that each measurement is within a predetermined acceptable amplitude range at each interval for an ideal character. If all of the measurements of the amplitude are within the acceptable ranges, a recognition signal of the character is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.